Photoresistor
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A photoresistor is a passive component that decreases in resistance as a result of increasing illuminance on its sensitive surface, in other words, it exhibits photoconductivity. A photoresistor can b
LDR 1480405 6 7 HDR Enhancer 1
Three photoresistors with scale in mm
Large CdS photocell from a street light
The internal components of a photoelectric control for a typical USA streetlight. The photoresistor is facing rightwards and controls whether current flows through the heater which opens the main power contacts. At night, the heater cools, closing the power contacts, energizing the street light.
Photodetector
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Photodetectors, also called photosensors, are devices that detect light or other forms of electromagnetic radiation and convert it into an electrical signal. They are essential in a wide range of appl
Photoresistor
…Optoelectronics Photodetector Using a photoresistor to track light…
A photodetector salvaged from a CD-ROM drive. The photodetector contains three photodiodes, visible in the photo (the black squares arranged along the diagonal, in the very center).